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Genetic Variability, Correlation and Path Co-efficient Analysis for Agronomic Traits in Chickpea (cicer Arietinum L.) (bangladesh)

Md. Aktar Uz Zaman
Senior Scientific Officer
Pulses Research Centre, BARI, Ishurdi, Pabna

Mist Tuhina Khatun
Senior Scientific Officer
Pathology Division, BRRI, Gazipur

Abstract/ Executive Summary:

Forty genotypes of chickpea (Cicer arietinum L.) were studied in a field experiment conducted at the experimental field of BARI, Joydebpur, during the year 2004-2005. Significant genetic variations were observed among the genotypes for days to flower, plant height, number of branches per plant, number of pods per plant, 100-seed weight and seed yield per plant. The highest genotypic variability was observed in the number of seeds per pod and seed yield, followed by the number of pods per plant and branches per plant, whereas days to maturity showed the lowest genotypic co-efficient of variability. In all cases, phenotypic variances were higher than the genotypic ones. High heritability coupled with high genetic advance was observed for seed yield per plant, pods per plant, 100-seed weight and dry weight per plant, which indicates that selection could be effective for these traits. Considerable heritability was observed in pod length, seeds per pod and days to flowering. The results showed that seed yield per plant had a positive and significant relation with branches per plant and pods per plant. A number of pods per plant were positively correlated with branches per plant but negatively correlated with plant height and days to first flowering. Weight of 100-seed had a significant and positive correlation with days to first flowering, dry weight per plant and pod length but had a negative correlation with pods per plant and seeds per pod. Days to first flowering, pod length, pods per plant, dry weight per plant had a direct effect on yield. Therefore, days to first flowering, pods per plant, pod length, branches per plant and dry weight per plant are found the important characters which could be used in selection for yield.

Keywords: Variability, Genetic advance, Heritability, Chickpea, Correlation, Path analysis

Location: Bangladesh Agricultural Research Instiute

Start Date: 01-12-2004

End Date: 30-04-2005

Program Area: Variety and Species

Commodity: Chickpea

Objectives:

This study was undertaken to: study the variability for yield and yield contributing characters, study heritability and genetic advance for yield and yield contributing characters and assess the relationship of yield and different yield contributing characters of chickpea.

Methodology:

An experiment comprising 40 chickpea genotypes was conducted in a randomized block design with three replication at the Research farm of Bangladesh Agricultural Research Institute (BARI), Gazipur during Rabi season (December to April) 2004-2005. The unit plot size was two rows of 3-meter length. The inter-row to row and plant to plant spacing was maintained at 40 cm and 10 cm, respectively. Recommended fertilizer doges, cultural practices and all plant protection measures were followed to ensure a good crop. The data on 10 morphological characters namely days to first flowering, days to 50% flowering, days to pod maturity, plant height (cm), dry matter weight (g), number of branches per plant, number of pods per plant, number of seeds per plant, pod length (cm), 100 seeds weight (g), seed yield per plant (g) were recorded on five randomly selected plants. The data were subjected to statistical analysis using MSTATC software. The mean values were separated by DMRT. Components of genetic parameters like genotypic and phenotypic variance, genotypic and phenotypic coefficient of variation, heritability, genetic advance, genotypic and phenotypic correlation coefficient and path analysis were estimated following Singh and Choudhury (1979).

Source of Information: The Agriculturists 7(1&2): 12-21 (2009)

Article Link (Online Journal): The Agriculturists 7(1&2): 12-21 (2009)

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Genetic variability was done to find out the more variable characters which might be used in the hybridization programme. From this present study days to flower, plant height, number of branches per plant, number of pods per plant, 100 seed weight and seed yield per plant are more variable character among these genotypes. Correlation and path co-efficient analysis was
done to find out the relationship among the yield and yield contributing characters. This present study showed that seed per plant has a positive and significant relation with branches
per plant and pods per plant. The number of pods per plant is positively correlated with branches per plant but negatively correlated with plant height and days to first flowering. Weight of 100-seed had a significant and positive correlation with days to first flowering, dry weight per plant and pod length but had a negative correlation with pods per plant and seeds per pod. Days to first flowering, pod length, pods per plant, dry weight per plant had a direct effect on yield. Therefore, days to first flowering, pods per plant, pod length, branches per plant and dry weight per plant are the important characters that could be used in selection for yield.

Knowledge Management: Journal